Ear plug



FIG. 1 is a front, right and top perspective view of an ear plug, showing my new design;

FIG. 2 is a rear, left and bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

F1G. 9 is a cross-sectional view taken along line 9-9 of FIG. 3 .

The broken lines in the drawings depict portions of the ear plug that form no part of the claimed design. 

CLAIM The ornamental design for an ear plug, as shown and described. 